Balanus amaryllis. Darwin, 1851 Plate 7 fig 6. a) Balanus amaryllis b) scutum, internal c) tergum, external view

Balanus amaryllis. Darwin, 1851 Plate 7 fig 6. a) Balanus amaryllis b) scutum, internal c) tergum, external view
Photographer: Sowerby, George